<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>线性渐变</title>
    <style>
        .box1{
            width:200px;
            height:200px;
            /* background-image: linear-gradient(red,yellow,orange); */
            background-image: repeating-linear-gradient(to right,yellow,orange,red);
           
        }
    </style>
</head>
<body>
    <div class="box1"></div>
    
</body>
</html>